The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2016
Filed:
May. 18, 2015
King Abdulaziz City for Science and Technology (Kacst), Riyadh, SA;
Turki Saud Mohammed Al-Saud, Riyadh, SA;
Rashid Mohammed Altamimi, Riyadh, SA;
Vladimir Enokovich Agabekov, Minsk, BY;
Alexander Anatolievich Muravsky, Minsk, BY;
Nikolai Stanislavovich Kazak, Minsk, BY;
Vladimir Nikolaevich Belyi, Minsk, BY;
Nikolai Anatolievich Khilo, Minsk, BY;
Anatoli Ivanovich Mitskovets, Minsk, BY;
Svetlana Nikolaevna Kurilkina, Minsk, BY;
Anatol Anatolievich Ryzhevich, Minsk, BY;
Abstract
A light pen for writing on a polarized light sensitive surface is disclosed. Light emitting diodes emit non-polarized light and a polarization block comprising of a truncated cone shaped collimating optical element, a broad band polarization divider, a broadband semi-wave plate, shifting bi-prism and light beam coupler are built to convert the non-polarized light to be converted to polarized uniform intensity light that is focused using a set of projection lens to a writing surface. The said light pen can be used for creating non erasable writing on many types of articles, documents, and records that would provide verification of authenticity and security.